I'm restoring my first PC, a 486DX-50 clone. The VARTA battery has leaked.
After removing the battery from the motherboard, I found that it was not connected to the (+/-) leads as expected, but instead to D3 and (-). I thought this setup was needed to bypass battery recharging. But when I measured the voltage between D3 and (-) while the PC is on, I found it 1.2V, while the voltage between (+) and (-) is almost zero.
I'm wondering what type of battery should I put on the motherboard now! Normal 3V battery or a rechargable one? Shall I solder the new battery to (+) or to D3?
After removing the battery from the motherboard, I found that it was not connected to the (+/-) leads as expected, but instead to D3 and (-). I thought this setup was needed to bypass battery recharging. But when I measured the voltage between D3 and (-) while the PC is on, I found it 1.2V, while the voltage between (+) and (-) is almost zero.
I'm wondering what type of battery should I put on the motherboard now! Normal 3V battery or a rechargable one? Shall I solder the new battery to (+) or to D3?